CN108871674B - Built-in online dynamic balance device test bench of main shaft - Google Patents
Built-in online dynamic balance device test bench of main shaft Download PDFInfo
- Publication number
- CN108871674B CN108871674B CN201811058799.4A CN201811058799A CN108871674B CN 108871674 B CN108871674 B CN 108871674B CN 201811058799 A CN201811058799 A CN 201811058799A CN 108871674 B CN108871674 B CN 108871674B
- Authority
- CN
- China
- Prior art keywords
- driven shaft
- built
- dynamic balance
- connecting piece
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004088 simulation Methods 0.000 claims abstract description 21
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 230000035939 shock Effects 0.000 claims abstract 3
- 238000013016 damping Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/30—Compensating imbalance
- G01M1/32—Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Balance (AREA)
Abstract
A kind of built-in online dynamic balancing unit test bed of main axis, including fixing the electric main axis on the vibration isolation shock attenuation work station through the electric main axis base, the front end of the electric main axis connects with back flange link through the connecting piece of the tool holder, the back flange link passes the flexible connection with front flange link mounted on the back end of driven shaft, the driven shaft is fixed to base through the front bearing support, back bearing support, the base is fixed on vibration isolation shock attenuation work station, the anterior segment of the driven shaft has built-in holes used for installing the online dynamic balancing unit, the back segment of the driven shaft has threaded holes used for installing the front flange link; counterweight threaded holes are uniformly distributed in an unbalance simulation disc arranged on the outer side of the middle part of the driven shaft, and the mass distribution of the unbalance simulation disc is changed by mounting screws, so that unbalance vibration simulation is performed; the invention can completely meet the test research requirements of the built-in online dynamic balance device and is convenient to build.
Description
Technical Field
The invention relates to the technical field of a test bed of a main shaft online dynamic balance device, in particular to a test bed of a main shaft built-in online dynamic balance device.
Technical Field
Rotor vibration caused by imbalance is one of the most common faults in rotary machines. In a high-speed and high-precision machine tool, vibration of a spindle affects the life of the machine tool and the machining precision of parts, and how to reduce the vibration is a problem to be solved in industrial production. In order to ensure the production efficiency, a high-speed and high-efficiency dynamic balance technology is needed, so that the online dynamic balance technology is developed. In the online dynamic balance technology, the more mature and practical is that a dynamic balance device is arranged on a main shaft, and the dynamic balance work is completed by the device; the main popular online dynamic balancing devices at present mainly have three types, which are respectively: a motor type online dynamic balance device, an electromagnetic type online dynamic balance device and a liquid type online dynamic balance device.
The existing online dynamic balancing device has various limitations under high-speed conditions, because the reliability of the device cannot be ensured under the high-speed conditions, and the most common grinding machine main shaft in the industrial field is a built-in online dynamic balancing device, so that continuous research on the built-in online dynamic balancing device of the high-speed main shaft is necessary.
The research work of the built-in online dynamic balance device is not separated from test verification, the test bed not only can simulate the unbalanced vibration of main shafts such as a grinding machine and the like, but also needs to be installed at a proper position of the online dynamic balance device, and the existing work bed can not meet the requirement, so that the research of the test bed with a proper structure is urgently needed and is applied to the research work of the online dynamic balance device.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a test bed of a spindle built-in type online dynamic balance device, which can meet the research requirements of a motor type online dynamic balance device and a piezoelectric type online dynamic balance device.
In order to achieve the purpose, the invention adopts the technical scheme that:
a main shaft built-in type online dynamic balance device test bed comprises a vibration isolation and damping workbench 16, wherein two electric main shaft bases 15 which are arranged in front and back are connected to the vibration isolation and damping workbench 16, an electric main shaft 14 is installed on each electric main shaft base 15, the front end of each electric main shaft 14 is connected with a cutter handle connecting piece 13, each cutter handle connecting piece 13 is connected with a rear flange connecting piece 12, each rear flange connecting piece 12 is flexibly connected with a front flange connecting piece 11 installed at the rear end of a driven shaft 6, each driven shaft 6 is fixed on a base 1 through a front bearing support 5 and a rear bearing support 9, each base 1 is fixed on the vibration isolation and damping workbench 16, and the connecting flanges on the front flange connecting pieces 11 and the rear flange connecting pieces 12 are in;
the front section of the driven shaft 6 is provided with a built-in hole 3 for installing an online dynamic balance device 18; the rear section of the driven shaft 6 is provided with a threaded hole for mounting the front flange connecting piece 11;
the front end face of the driven shaft 6 is provided with device flange mounting holes 2, part of the device flange mounting holes 2 correspond to mounting holes on a power supply slip ring 17 flange, and the other part of the device flange mounting holes 2 correspond to mounting holes on a dynamic balance device 18 flange;
driven 6 middle part outsides of axle be equipped with unbalanced simulation dish 7 on evenly distributed two rings of counter weight screw holes 8, change unbalanced simulation dish 7's mass distribution through installation counter weight screw to carry out the simulation of unbalanced unbalance vibration.
Two circles of balance weight threaded holes 8 are uniformly distributed on the unbalance simulation disc 7.
The driven shaft 6 is supported on the front bearing support 5 and the rear bearing support 9 through the bearing 20, the inner ring of the bearing 20 is axially positioned on the driven shaft 6 through the locking nut 19 and a shaft shoulder, the axial positioning of the outer ring of the bearing 20 corresponding to the front bearing support 5 is realized through the sleeve 21 and the front bearing end cover 4, the axial positioning of the outer ring of the bearing 20 corresponding to the rear bearing support 9 is realized through the retaining sleeve 23 and the rear bearing end cover 10, a circle of pre-tightening springs 22 are uniformly distributed in the rear bearing support 9, the pre-tightening springs act on the outer ring of the rear bearing through the retaining sleeve 23, and the pre-tightening of the bearing 20 is realized through the locking nut 19 on the other side.
Six test bracket mounting holes 25 are formed in the rear bearing end cover 10.
The invention has the beneficial effects that:
1. the driven shaft 6 of the invention adopts a built-in hollow structure of the on-line dynamic balance device, so that the on-line dynamic balance device 18 is compactly arranged on the driven shaft 6, the volume of the driven shaft 6 is hardly influenced, the test space is saved, and the invention has important exploration significance on application places limited by space in production; in addition, the online dynamic balance device 18 is arranged inside the driven shaft 6, is hardly influenced by external dust, oil and dirt and the like, can better ensure the reliability of the test and reduce the damage of the device;
2. the unbalance simulation disc 7 structure for carrying out unbalance vibration simulation is arranged on the driven shaft 6, and the unbalance simulation disc 7 and the driven shaft 6 are of an integral structure, so that the unbalance simulation disc can be arranged in the middle of the shaft 6, and unnecessary troubles caused by the problems of disassembly and installation positions of an off-line disc are avoided; most importantly, unbalance vibration in the production process of a grinding machine spindle and the like can be conveniently and effectively simulated by means of the unbalance simulation disc 7.
3. The device flange mounting hole 2 arranged on the driven shaft 6, the test bracket mounting hole 25 arranged on the end face of the rear bearing end cover 10 and the like ensure that equipment required by a dynamic balance test is compactly and reliably arranged on a test bed, and all parts are reasonable in layout, so that the test research requirement of the online dynamic balance device can be completely met; the test bed adopts the form that the electric spindle drags the driven shaft, so that the existing resources such as electric spindle parts, a workbench and the like can be effectively and reasonably applied, the test bed is convenient to build, and the time is saved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the assembly of the driven shaft 6 and the bearing 20.
Fig. 3 is a schematic distribution diagram of the counterweight threaded holes 8 of the unbalance simulation disk 7.
Fig. 4 is a schematic end view of the rear bearing end cap 10.
Fig. 5 is a schematic view of the front flange connection 11.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, a main shaft built-in online dynamic balance device test bed comprises a vibration isolation and damping workbench 16, wherein the vibration isolation and damping workbench 16 is connected with two electric main shaft bases 15 which are arranged in front and back, an electric main shaft 14 is installed on each electric main shaft base 15, the front end of each electric main shaft 14 is connected with a knife handle connecting piece 13, each knife handle connecting piece 13 is connected with a rear flange connecting piece 12, the rear flange connecting pieces 12 are flexibly connected with a front flange connecting piece 11 which is installed at the rear end of a driven shaft 6 to realize motion transmission, and the purpose that the electric main shafts 14 drag the driven shaft 6 to rotate in the operation process is achieved; the driven shaft 6 is fixed on the base 1 through the front bearing support 5 and the rear bearing support 9, and the base 1 is fixed on the vibration isolation and damping workbench 16 through 4 bolts, so that the concentric corresponding relation of the connecting flanges on the front flange connecting piece 11 and the rear flange connecting piece 12 is ensured.
Six phi 4 device flange mounting holes 2 are formed in the front end face of the driven shaft 6, three of the six phi 4 device flange mounting holes correspond to mounting holes in a power supply slip ring 17 flange, the other three device flange mounting holes correspond to mounting holes in a dynamic balance device 18 flange, and the devices are fixedly mounted through six screws.
The front bearing support 5 and the rear bearing support 9 are fixed on the base 1 through screw connection, and three mounting holes with threads are formed in each bearing seat and are correspondingly mounted with threaded holes in the bases 5 and 9 respectively.
As shown in fig. 2, the front section of the driven shaft 6 is provided with a built-in hole 3 for installing a linear dynamic balance device 18, and the rear section of the driven shaft 6 is provided with a threaded hole for installing a front flange connecting piece 11; the driven shaft 6 is supported on the front bearing support 5 and the rear bearing support 9 through a bearing 20, the bearing 20 is a 6014 deep groove ball bearing, the axial positioning of the inner ring of the bearing 20 on the driven shaft 6 is realized through a locking nut 19 and a shaft shoulder, the axial positioning of the outer ring of the bearing 20 corresponding to the front bearing support 5 is realized through a sleeve 21 and a front bearing end cover 4, the axial positioning of the outer ring of the bearing 20 corresponding to the rear bearing support 9 is realized through a retaining sleeve 23 and a rear bearing end cover 10, a circle of pre-tightening springs 22 are uniformly distributed in the rear bearing support 9, the pre-tightening on the bearing 20 is realized through the retaining sleeve 23 and the locking nut 19 on the other side.
As shown in fig. 3, two circles of balance weight threaded holes 8 are uniformly distributed on the unbalance simulation disk 7 arranged on the outer side of the middle of the driven shaft 6, the number of each circle of balance weight threaded holes 8 is 12, the inner circle is phi 6, the outer circle is phi 4, and the mass distribution of the unbalance simulation disk 7 can be changed through mounting screws, so that unbalance vibration simulation is performed.
As shown in fig. 4, two circles of holes are uniformly distributed on the end surface of the rear bearing end cover 10, four bearing end cover fixing holes 24 of the outer circle Φ 6 are used for installing the bearing rear end cover on the rear bearing support 9, and 6 test support installing holes 25 of Φ 4 reserved in the inner circle are used for fixing the sensor support.
As shown in fig. 5, the screw thread on the front flange connector 11 is connected with the screw hole at the rear end of the driven shaft 6 in a matching manner, and eight through holes are uniformly distributed on the flange of the front flange connector 11 and used for being flexibly connected with the flange of the same structure on the rear flange connector 12 arranged on the electric main shaft 14, so as to achieve the purpose that the electric main shaft 14 drags the driven shaft 6 to rotate.
The working principle of the invention is as follows: the invention is used for carrying out the experimental research work of the motor type and piezoelectric type online dynamic balance device; when test research is carried out, the electric spindle 14 is started, the driven shaft 6 is dragged to rotate through flexible connection, a dynamic balance test is carried out on the driven shaft 6, and different counterweight screws are added into counterweight threaded holes 8 in the simulation unbalance disc 7 before the test is started to simulate different unbalance conditions; the online dynamic balance device 18 rotates together with the driven shaft 6, and the power supply slip ring 17 is used for supplying power to the online dynamic balance device 18 to drive the mass block in the online dynamic balance device 18 to move, so that the mass distribution is changed, the purpose of offsetting the unbalance on the driven shaft 6 is achieved, and the dynamic balance work is completed.
Claims (3)
1. The utility model provides a built-in online dynamic balance device test bench of main shaft, includes vibration isolation shock attenuation workstation (16), its characterized in that: the vibration isolation and damping workbench (16) is connected with two electric main shaft bases (15) which are arranged in front and back, an electric main shaft (14) is installed on the electric main shaft base (15), the front end of the electric main shaft (14) is connected with a tool handle connecting piece (13), the tool handle connecting piece (13) is connected with a rear flange connecting piece (12), the rear flange connecting piece (12) is flexibly connected with a front flange connecting piece (11) installed at the rear end of a driven shaft (6), the driven shaft (6) is fixed on the base (1) through a front bearing support (5) and a rear bearing support (9), the base (1) is fixed on the vibration isolation and damping workbench (16), and connecting flanges on the front flange connecting piece (11) and the rear flange connecting piece (12) are in concentric correspondence;
the front section of the driven shaft (6) is provided with a built-in hole (3) for installing a linear dynamic balance device (18); the rear section of the driven shaft (6) is provided with a threaded hole for mounting a front flange connecting piece (11);
the front end face of the driven shaft (6) is provided with device flange mounting holes (2), part of the device flange mounting holes (2) correspond to mounting holes on a power supply slip ring (17) flange, and the other part of the device flange mounting holes (2) correspond to mounting holes on a dynamic balance device (18) flange;
the unbalance simulation disc (7) arranged on the outer side of the middle part of the driven shaft (6) is uniformly distributed with balance weight threaded holes (8), and the mass distribution of the unbalance simulation disc (7) is changed through mounting screws, so that unbalance vibration simulation is performed;
the driven shaft (6) is supported on the front bearing support (5) and the rear bearing support (9) through the bearing (20), the inner ring of the bearing (20) realizes axial positioning on the driven shaft (6) through the lock nut (19) and the shaft shoulder, the axial positioning of the outer ring of the bearing (20) corresponding to the front bearing support (5) is realized through the sleeve (21) and the front bearing end cover (4), the axial positioning of the outer ring of the bearing (20) corresponding to the rear bearing support (9) is realized through the retaining sleeve (23) and the rear bearing end cover (10), a circle of pre-tightening springs (22) are uniformly distributed in the rear bearing support (9), the outer ring of the rear bearing is acted through the retaining sleeve (23), and the pre-tightening of the bearing (20) is realized through the lock nut (19) on the other side.
2. The built-in online dynamic balance device test bed of the main shaft according to claim 1, characterized in that: two circles of balance weight threaded holes (8) are uniformly distributed on the unbalance simulation disc (7).
3. The built-in online dynamic balance device test bed of the main shaft according to claim 1, characterized in that: six test bracket mounting holes (25) are formed in the rear bearing end cover (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058799.4A CN108871674B (en) | 2018-09-11 | 2018-09-11 | Built-in online dynamic balance device test bench of main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058799.4A CN108871674B (en) | 2018-09-11 | 2018-09-11 | Built-in online dynamic balance device test bench of main shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108871674A CN108871674A (en) | 2018-11-23 |
| CN108871674B true CN108871674B (en) | 2020-05-15 |
Family
ID=64323865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811058799.4A Active CN108871674B (en) | 2018-09-11 | 2018-09-11 | Built-in online dynamic balance device test bench of main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108871674B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521325B (en) * | 2019-02-01 | 2024-05-17 | 中国铁建高新装备股份有限公司 | Auxiliary device of transmission shaft dynamic balance testing machine and corresponding dynamic balance testing method |
| CN110985450B (en) * | 2019-12-10 | 2020-11-17 | 西安交通大学 | Large-balance-capacity high-precision online dynamic balance terminal suitable for fan rotor |
| CN112338215B (en) * | 2020-11-10 | 2024-05-03 | 井冈山大学 | High-speed main shaft adjusting method convenient for realizing secondary dynamic balance |
| CN113513543A (en) * | 2021-03-16 | 2021-10-19 | 中国航发哈尔滨东安发动机有限公司 | Flange connection overtorque protection device |
| CN113465918A (en) * | 2021-06-24 | 2021-10-01 | 重庆大学 | High-speed electric main shaft test bench |
| CN116773088B (en) * | 2023-06-16 | 2024-09-03 | 中国航空发动机研究院 | Engine rotor balancing system and method and engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004961A2 (en) * | 2001-07-05 | 2003-01-16 | Schenck Rotec Corporation | Self-calibrating machines for balancing work pieces and methods of machine calibration |
| CN102095555B (en) * | 2010-12-07 | 2012-03-28 | 西安交通大学 | High-speed spindle on-line automatic balancing experiment system |
| CN102252806A (en) * | 2011-04-27 | 2011-11-23 | 北京工业大学 | Built-in high-speed spindle double-sided on-line dynamic balance device and control system thereof |
| CN104990670B (en) * | 2015-07-08 | 2018-02-02 | 沈阳建筑大学 | A kind of method of adjustment of main shaft Built-in mechanical on-line dynamic balancing system |
| CN105021352B (en) * | 2015-07-08 | 2017-10-20 | 沈阳建筑大学 | A kind of main shaft Built-in mechanical on-line dynamic balancing system |
| CN106984836B (en) * | 2017-04-21 | 2020-03-10 | 东华大学 | High-speed high-precision built-in dynamic and static piezoelectric main shaft |
| CN108134537B (en) * | 2018-01-09 | 2019-07-12 | 西安交通大学 | A kind of built-in piezo-electric type on-line dynamic balancing executive device |
-
2018
- 2018-09-11 CN CN201811058799.4A patent/CN108871674B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108871674A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108871674B (en) | Built-in online dynamic balance device test bench of main shaft | |
| CN110864077B (en) | Motor-driven automatic balancing system with autonomous regulation and control capability | |
| CN113328319B (en) | On-site machining equipment for collector ring of hydraulic turbine unit and using method | |
| US3830109A (en) | Device for dynamic balancing of rotors | |
| CN102095554A (en) | Automatic on-line balancing system of liquid-injection high-speed main shaft | |
| CN112064386A (en) | Double-twisting machine rotating shaft system device, double-twisting machine with same and machining and assembling method of double-twisting machine rotating shaft system device | |
| CN103776588B (en) | A kind of shafting dynamic balance experimental provision | |
| CN110470428B (en) | Online dynamic balance adjusting device driven by shape memory alloy | |
| CN206614301U (en) | A kind of ultra-precision machine tool main shaft and fixture adpting flange | |
| CN111829802A (en) | Multi-roller dynamic balance vibration coupling test bed and test method | |
| CN110095276B (en) | Portable power knife rest all-condition loading test device | |
| CN102935522B (en) | Spindle box mechanism of novel numerical control engraving and milling machine | |
| CN212110524U (en) | Multi-roller dynamic balance vibration coupling test bed | |
| CN105965037A (en) | Four-surface dynamic balance realizing method of high-speed main shaft | |
| CN117824920A (en) | Automatic online dynamic balancing device | |
| CN202291995U (en) | Rotary welding device | |
| CN111397891A (en) | Non-contact all-working-condition loaded electric spindle reliability test device | |
| CN206747600U (en) | A kind of revolution at a high speed bearing block | |
| CN215811404U (en) | Automatic balancing machine spindle structure capable of rapidly replacing clamp | |
| CN203039530U (en) | Motor rotor balance processing machine | |
| CN212497166U (en) | Honing device for eliminating runout out of steam turbine rotor shaft neck | |
| CN207353925U (en) | Easy to the large-scale vertical AC permanent-magnet torque direct driving motor mounting structure adjusted | |
| CN203875738U (en) | High-precision honing device | |
| CN211388154U (en) | Efficient and energy-saving thicknessing machine | |
| CN205166562U (en) | Bent axle lapping machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |